In the story "The yellow wallpaper". How does the reader know that the narrator's mental state has begun to deteriorate?

a) She writes constantlv about her belief that she is immortal.

b) She screams at lennie all dav to let her out

C She tres several times to jump from her room's window

d) She becomes obsessed with finding a pattern in the wallpaper's design.

e She screams at her husband all dav to let her out